Portable fire-extinguisher.



W. REA & G. E. FERGUSUN. PORTABLE HRE EXTINGUISHER. APPLHZATION HLED MAR. 3. 1915. RENEWED NOV. 1.1915.

Patented May 23, 1916.

UNITED STATES. PATE WILLIAM mm AND GEORGE E FERGUSON, or NEW YORK, N. 2., sssmnoizs'ro insist MANUFACTURING COMPANY. CORPORATION DELAWARE I PORTABLE FIRE-EXTINGUISHER.

Specification of Letters Patent.

NT O F E;

patente -Ma 23,1916;-

, Application filedKarch'S, 1915, Serial No. 11,716. RenewedNo ember 11, 19 i5. serial ire-66,973. I v i I T oall whom it ma concern. Be it known that we, VVI 'LIAM REA, having declared his intention to become a citizen of the United States bytaking out his first pa .ers, and residing in the city of- New York, ronx, county, .;and State of New York, and' Gsoam-z E. FERGUSON, a citizen of the United States, and resident of the city, county, and State of New York, have inventedcertain new and useful Improvements in Portable FirwExtinguishers, pf

- which the following is a-specification.

" This invention relates to a portable fire extinguisher in which the fire-extinguishing liquid is expelled from the container by means of pressure.

-' lfixperiments have been made on various liquids, using'air pressure to expel the contents of the extinguisher, but in all cases where compressedair or gas is. held in a niet'alcontainer-to be used at some futurev time as energy the results have been un- Isa-tisfactory. The most satisfactory .method found to expel liquids from a container is by using a chemlcal which when acted upon by certain reagents will liberate a gas.

Extinguishers now in use are of the soda and acid type, in which the apparatus consists of a metal container having a liquid exit at the top and also a cage for holding a bottle of' acid (generally sulfuric acid). To charge this apparatus, two and one-half gallons of a water solution of bicarbonate of soda is poured into the container; a bottle of sulfuric acid is-next placed in'a cage (the bottle being supplied with a very loose fitting stopper)- and the cage is then set in position and the lid or top casting screwed 'into place. To operate the extinguisher, the

container is turned bottom side jup, which causes the cork or stopper to drop from the solution. It becomes necessary, therefore,

in order: to utilize substances'which are in; soluble in a water solution for generating 'i the gas, orwhich would react ifmixedwith ing chamber, from coming in contact with -the liquid in the second compartment and,

at thesame time, permit the gas which is generated to pass from the gas generating chamber to the extinguishing liquid compartment, Certain mechanical features are necessary to accomplish this purpose, which features form the sub ect of this intention.

After the contents of the extinguisher have been expelled, it is essential to prevent anyreactionary products in the gas gener-' ating chamber passing to the compartment which contained the tire extinguishing compound, because in refilling the extinguisher? a reaction-will take place between the liquid 1n the fire-extinguishing liquid com art. ment and the. reactionary products 0 the gas generating chamber'which have passed into the lower compartment when the extinguisher has been righted again after the charge has been expelled To prevent this, is another object of this invent on. I j

In the drawings We have illustrated the invention by a sectional'sideelevation of an extinguisher embodying the features here- I ina fter described.

In the drawings 18 is the compartment for I holding the fire extinguishing fluid. and is separated from the gas generating'ehamber. 17 by the partition or wall 6.- This wall 6' is provided with a depression 19 whichmay be in'the form of a cupattached thereto, which has for its purpose the holding of the acid container 4 in position and also serving as a funnel for filling the compartment 18 with the fire extinguishing fluid. At the lowerext'remity of the depression 19 is at tached a. pipe 13 which extends from the base of 19 to a point near the bottom ofgthe compartment 18 and has for. its purpose the conducting of the gas which is generated in the compartment 17 to the compartment 18. At the point where the pipe 13 joins the depression 19 there is fitted a screen 9 to prevent any solid substance passing into the tube 13 during the process of filling the extinguishe'r, Just below this point and in the pipe 13 is placed .a oneway ball valve which permits gas and liquid to flow through the pipe 13 from the compartment 17 to the compartment 18 but which prevents the pas- .ing through thepipe 13 and a seat 11 for th ball, substantially as shown.

, ting stopper An extension 5 of the cup 19 extends above the separating wall 6 and acts as a bafiie,

preventingtheproducts of the reactions in the gas generating chamber 17 from passing out of this chamber into the container 18 when the extinguisher is righted ,again after the liquid has been expelied. An elbow 7 attached to the container 18 has attached thereto a hose and nozzle 14 for directing the stream of tire extinguishing liquid.

The acid container 4. fits loosely.in the cup 19 and rests'on the ings 8 attached to bottom of the cup 19, which ern' its the gas generate in thechamber 1 to pass to the chamber through the'pipe 13. The acid container: It is fitted with a loosely fit- A cover ortop casting 1 screws on t'o-the threaded casting'lfi; A screen 2 inthe form of a perforatcd'cyllnder is attached to the under side of the cover land, when the top casting 1 is in place, rests against the acid container 4, holding the, same in positistm. The screen 2 is larger in diameter than the loose fitting stopper 5 which it, surrounds. hen the extinguisher is inverted thc'acid container 4 rests aga'i st the screen 2 and simultaneously the loose tting stopper 3 drops away from the acid container 4. This permits the acid to- How from the acid container into the carbonate contained in the chamber 17, generating the gas which is forced into the chamber 18 through the pipe 13, thereby forcing the liquid from the chamber 18 through the elbow 7 and hose and nozzle 14:. W hat we claim 1s-- 1, In a firetextinguisher, in combination,

a compartment for the 'fire extinguishing fluid, a gasfgenerating chamber separated from sa d compartment by a partition wall, a pipe; providing a communication between said gas chamber andfiuid compartment, an

arid 'container positioned in said gas chamber, and screen positioned between said acidcontainer and the cover ofthc extingunshot as holding said. container in p osid 'g umpartinent h a partition wali,

i an? in position.

if, in' a are extinguisher, in combination, a,

I from said compartment by a partition wall,

communicating means through said wall between said gas chamber and fluid compartment, an extension mounted on said wall surrounding said conimunicating means adapted to prevent the products of reaction in said gas chamber from passing therefrom, an acid container positioned in said gas chambei-,and a screen positioned between said acid container and the cover ofthe extinguisher for holding said container in position.

4.111 a fire extinguisher, in combination, a compartment for the fire extinguishing fluid, a gas generating chamber separated from said compartment by a partition wall,

comnninicating means through said wall be ment, a cup shaped member attached to said -Wa1l and at the bottom of which said com tween said gas chamber and fluid com 'iart gas chamber and a screen positioned between said acid container and the cover of the extinguisher for holding said container In a re extinguisher, in combination,

fluid, a generating chamber separate from said compartment by partition wall, communicating means through said wail between said gas chamber and fluid compartment, a cup shaped member attached to said wall extending on either side thereof and atthe bottom of which said communicating means is positioned, partition wall an cup-shaped member being adapted to prevent the products of reaction in said gas a compalt cut for the fire extinguishing chamber from passing therefrom, an acid container positioned in said gas chamber, and a screen positioned between said acid container and the cover of the extinguisher for,

holding said container in positio 6. In a, fire extingu sher, in combination,

a compartment for the fire extinguishing fluid, gas generating chamber separated from said compartment by a'partition wall,

tween said gas, chamber and fiuid compartment, cup shaped member attached to said will and at the bottomof which said comcommunicating means through. saidwall be' municating means is positioned, said partition Wall and cup-shaped member being adapted to prevent the products of IPtLCtiOil in said gas chamber from passing therefrom. an acid container positioned in said cap shaped memt'r. and a srreen positioned between said acid container and the cover of the extinguisher for h lding; said eontainer in position.

7. In a fire extinguisher, in combination, a compartment for the fire extinguishing fluid. a gas geiierating chamber separated from said compartment by a partition \vail, said partition wall having attaeiied thereto a cup shaped member provided with communieating means extending from the bot tom thereof and forming a romn'ninieation from said gas chamber to said fluid coinpartment. the sides of said cup shaped member ("oi-min; a battle preventing the products of reaction in said gas chamber from passing: into said communicating means, and an arid container positioned in Said cup shaped member.

R. In a fire extinguisher. in combination. a compartment for the tire extinguishing fluid. a gas generating chamber separated from said compartment by a partition wail, said partition wail ha vine attached thereto a (up shaped member extending, on either side thereof and provided with coinmunirating m nus extending from the bottom thereof and forming a minununiration from said ga chamber to said ihiid com partment, the sides of aid cap sl-iaped member forming a batiie preventing the produets of reaction in said gas chamber iron pass ing into said eomnninieating means, and an acid container positioned in said cup shaped member.

9. in a fire extinguisher, in combination, a compartment for the tire extinguishing fluid, a gas generating chamber separated from said compartment by a partition wall, said partition wall having attached thereto a cup shaped member provided with a pipe extending from the bottom of said cup shaped member to the opposite side of said fluid compartment, the sides of said cup shaped member forming a bathe preventing the products of reaction in said gas chamber from. passing into said communicating means, and an acid container positioned in said cap shaped member.

10. In a fire extinguisher, in combination, a compartment for the fire extinguishing fluid, a gas generating chamber separated from said compartment by a partition Wall, said partition wall having attached thereto a cup shaped member provided with a ipe provided with a valve and extending om the bottom of said cup shaped member to the opposite side of said fluid compartment,

the'sides of said cap shaped member forming a baiiie preventing the products of reaction in said gas chamber from passing into said ron'uminieating means, and an acid container positioned in said cup shaped member.

Signed at the city. county and State of New York, this 25th day of February, 1915. WILLIAM REA.

(iiCORGId E. FERGUSON. Witnesses Hanoi \V. CHAPMAN, 1'1. A. CLAPP. 

